The first discovery of a rocky, watery object beyond our solar system shows how planets might get their oceans
In this excerpt from Five Billion Years of Solitude author Lee Billings chronicles the pioneering scientists who have led the hunt for extraterrestrial intelligence in their quest to answer the haunting question: Is humanity alone in the universe?...
NASA calls for rover instrument proposals, but some resent the space lost to storage of samples for retrieval by an unspecified future mission
Although the Kepler space telescope's stabilization system is beyond repair, it has produced reams of data that have yet to be fully searched for exoplanets. John Matson reports.
Since it landed on Mars on August 6, 2012, the Curiosity rover has done photography, geology and roamed a good kilometer. John Matson reports
Science journalist, author and Nature editor Adam Rutherford talks about new book Creation: How Science Is Reinventing Life Itself, which looks at the science of the origin of life and at the emerging science of synthetic biology...
Early data from the rover teases out new details of Mars’s atmosphere and how it changed over billions of years
As a distant planet passes behind its host star, the small dip in brightness might let astronomers measure the planet's atmosphere
News of possible multiple habitable worlds around the red dwarf star Gliese 667 C may be exciting, but researchers caution that certainty about these exoplanets remains elusive
Bill Nye the Science Guy ponders Superman's tonsorial travails, and science education
An interactive graphic charts the location and distance to 861 known exoplanets, highlighting those that might hold life
The galaxy is teeming with planets. Scientists are straining to peer into their atmospheres to seek signs of extraterrestrial life
Editor in Chief Mariette DiChristina introduces the July 2013 issue of Scientific American
The Lone Signal project is taking a different approach to discovering extraterrestrials: sending messages into deep space
Upcoming cosmic alignments will give planet hunters an opportunity to intensify the search for potential exoplanets
Isotopic analysis of fluid seeping from an isolated Canadian underground reservoir indicates that the water has been sequestered for at least 1.5 billion years. Sophie Bushwick reports
The chemical fingerprints of lunar rocks suggest that Earth and the moon were born with their water already present
Newly discovered microbes breathe rocket fuel
NASA's orbiting Kepler telescope recently spotted three exoplanets in or near their stars' so-called habitable zones, the temperate region where a planet could accommodate liquid water...
At a recent scientific conference in Los Angeles, scientists explored the possibility of Mars being habitable, or even inhabited by microbes, in the present day